Home / 2,540.44-3,505.81-1,421.56

Finding the Fourth Proportional to 2,540.44, 3,505.81 and 1,421.56

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Solution

The fourth proportional to 2,540.44, 3,505.81 and 1,421.56 is: 1,961.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,540.44 : 3,505.81 = 1,421.56 : x
  2. Step 2: Convert to fraction form
    2,540.44/3,505.81 = 1,421.56/x
  3. Step 3: Cross multiply
    2,540.44x = 3,505.81 × 1,421.56
  4. Step 4: Simplify right side
    2,540.44x = 4,983,701.73
  5. Step 5: Solve for x
    x = 4,983,701.73/2,540.44
  6. Step 6: Final answer
    x = 1,961.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.